[R] restrected arima models

[george]

Dear all,
Does anyone know if it is possible to estimate restricted arima models using
the arima command in R? For instance lets say I want arima(6,0,0) but where
the first three ar parameters are restricted to zero, ie. ar(1)=ar(2)=ar(3)
= 0, and only the last three are actually estimated. 
Any help will be much appreciated.
george 



--
View this message in context: http://r.789695.n4.nabble.com/restrected-arima-models-tp4671847.html
Sent from the R help mailing list archive at Nabble.com.